WO2007026007A1 - Dispositif pour separer et polir, dispositif de serrage et outil a amortissement de vibrations - Google Patents

Dispositif pour separer et polir, dispositif de serrage et outil a amortissement de vibrations Download PDF

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Publication number
WO2007026007A1
WO2007026007A1 PCT/EP2006/065898 EP2006065898W WO2007026007A1 WO 2007026007 A1 WO2007026007 A1 WO 2007026007A1 EP 2006065898 W EP2006065898 W EP 2006065898W WO 2007026007 A1 WO2007026007 A1 WO 2007026007A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
tool
neck
hose piece
compressed
Prior art date
Application number
PCT/EP2006/065898
Other languages
German (de)
English (en)
Inventor
Peter Degen
Original Assignee
Rhodius Schleifwerkzeuge Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhodius Schleifwerkzeuge Gmbh & Co. Kg filed Critical Rhodius Schleifwerkzeuge Gmbh & Co. Kg
Priority to EP06793132A priority Critical patent/EP1940590A1/fr
Publication of WO2007026007A1 publication Critical patent/WO2007026007A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0829—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/20—Mountings for the wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration

Definitions

  • the invention relates to a device for separating and grinding, e.g. an angle grinder, with a work spindle on which a tool, e.g. a grinding, roughing or cutting disc is attached.
  • the attachment is made by means of a clamping flange and a nut.
  • the clamping flange is integrally formed with the working spindle or sitting loose but rotationally fixed on her.
  • the nut is screwed onto the end of the work spindle. Between the tool of the mother while vibration damping means are provided.
  • the invention also relates to appropriately designed clamping devices and tools, for. B. grinding, cutting or grinding discs.
  • DE-OS 26 32 652 shows a grinding wheel of at least two interconnected sanding plates, which are interconnected by a polymer layer arranged therebetween. This should be reduced vibrations.
  • WO 00/27590 describes a clamping device for grinding wheels, wherein between the clamping flange or the clamping nut and the grinding wheel, a metallic intermediate ring is arranged, which is provided with a damping layer of elastic material.
  • the damping layer extends both in the radial and in the axial direction.
  • DE-U-76 28 082 shows a grinding device in which an elastic disc ring between the grinding wheel and each flange is inserted and the grinding wheel is seated with clearance on the grinding spindle. The fixation of the grinding wheel on the grinding spindle happens here by axial forces.
  • DE-U-I 977 726 shows an elastic sanding pad, in which between a
  • Inner ring and an outer ring an elastic intermediate ring is pressed or vulcanized.
  • the invention has for its object to reduce as much as possible the harmful vibrations in the hands of the user of a hand-held separating or grinding device in a simple manner.
  • this object is achieved in that the mother of a
  • Neck nut is that the vibration damping means are provided as a piece of hose between the inside of the hub bore of the tool and the outside of the neck nut and that the hose piece before assembly has an axial projection or compressed or compressed in the assembled state.
  • the piece of tubing is merely attached to the neck nut and has no bond with her, ie the piece of tubing is not tied to the neck nut or glued to it and can be removed again by the mother and, for example damage be replaced.
  • the neck nut preferably has a neck portion of uniform, reduced diameter and a flat hex head whose smallest transverse dimension (key width) is greater than the diameter of the hub bore of the grinding wheel.
  • the piece of tubing sits on the neck area and has an axial protrusion of about 1 mm.
  • the outer diameter of the hose piece corresponds to the inner diameter of the hub bore of the grinding wheel and the length of the neck region corresponds to the thickness of the edge of the hub bore.
  • the neck nut is clamped with the pushed on hose piece against the clamping flange.
  • the underside of the hexagon head rests on the edge of the hub bore. Due to the fact that the hose piece has an axial projection of about 1 mm, it is compressed or compressed, so that a compression or compression connection of the drive spindle is formed with the grinding wheel.
  • the commonly used flange nut is not necessary or is replaced by the neck nut.
  • the neck nut with the hose piece can be used several times in this first embodiment.
  • the neck area has a diameter of 18 mm and the length of hose has a diameter of 22.13 mm.
  • the length of the neck corresponds to the thickness of the grinding wheel and the length of the hose has a protrusion of 1 mm.
  • the hexagon head has a key dimension of 24 mm.
  • the internal thread of the neck nut corresponds to the grinding spindle thread and can be M 14, for example.
  • the hose piece at the end, which faces the hexagonal head a collar whose contour coincides with that of the hexagonal head.
  • the length of the collar is then such that the remainder of the collar has a length equal to the thickness of the grinding wheel or tool plus the protrusion.
  • a similar neck nut can be used as in the first embodiment, but the length of the neck portion is about 0.5 mm larger than the thickness of the grinding wheel in the hub bore.
  • the diameter of the length of tubing before assembly is about 1 mm larger than the diameter of the hub bore.
  • the pressed nut is later thrown away together with the used grinding wheel.
  • the dimensions of the neck nut and the Hose piece so matched to the thickness of the grinding wheel that act on the grinding wheel little or no axial clamping forces when the neck nut rests against the clamping flange.
  • the grinding wheel is therefore primarily fixed by the radially acting forces acting through the compressed or compressed piece of tubing between the neck nut and the inner edge of the hub bore of the grinding wheel.
  • the clamping flange is of conventional design and may be integrally provided on the drive spindle or loosely but rotatably attached.
  • the neck nut with the hose piece is new and the subject of the invention is therefore also a clamping device for grinding wheels, which includes the previously described neck nut with the hose piece.
  • the invention is further a grinding wheel or the like
  • the elastic material of the hose piece is preferably a polyurethane elastomer, for. B. Vulkollan, with a resilience [DIN 53512] of 70% and a hardness [DIN 53505] of 80 + 5 Shore A.
  • the grinding wheel may be a grinding cup, a cutting wheel, a roughing wheel or the like tool.
  • the invention reduces the transmission of vibrations to the drive unit.
  • FIG. 1 shows, in section, the grinding wheel mounted on the work spindle according to the first embodiment of the invention
  • FIG. Fig. 2 is a plan view of the neck nut of Fig. 1; Figures 3, 4 and 5, the neck nut of Figure 1 with slid hose piece for grinding wheels of different thickness.
  • Fig. 6 in section on the working spindle clamped grinding wheel according to the second embodiment of the invention;
  • Fig. 7 in plan view, the neck nut of Fig. 6; Figures 8 to 10, the neck nut of Fig. 6 with the hose piece pushed on for
  • FIGS 1 to 5 show a first embodiment of the invention.
  • a clamping flange 14 rotatably, but releasably mounted.
  • a neck nut 16 By means of a neck nut 16, a grinding wheel 18 is fixed to the work spindle 12.
  • the neck nut 16 is shown in Figures 2 and 3 in more detail.
  • Neck nut 16 has a neck portion 20 with a cylindrical surface and at one end a flat hex head 22 which forms a flange at this end. It also has a continuous internal thread 24th
  • a piece of tubing 26 which covers the entire neck region 20 and protrudes at the opposite end of the hexagonal head 22 of the neck nut 16 with a projection 28 of about 1 mm.
  • the tube piece 26 has at the end, which abuts the hexagonal head 22, a narrow collar 30 whose outer edge coincides with that of the hexagonal head 22.
  • the length of the tube piece 26 without the collar 30 is greater than the thickness of the grinding wheel 18 in the region of the hub bore 19 by about 1 mm.
  • the projection 28 therefore also protrudes from the grinding wheel 18, if this on the neck nut 16 and the Hose piece 26 is placed.
  • a narrow gap between the clamping flange 14 on the one hand and the neck nut 16 and the grinding wheel 18 on the other hand is accordingly shown.
  • the neck nut 16 is tightened, this gap disappears and the tube piece 26 is compressed in the axial direction. Due to its elasticity, the hose piece 26 also transmits the pressure in the radial direction, so that a compression or compression connection between the work spindle 12 and the grinding wheel 18 results.
  • the neck nut 16 shown in Figure 3 has a length of 9 mm without the collar 30 and is therefore provided for clamping of grinding wheels 18 with a thickness of 8 mm.
  • neck nuts 16 are shown with a hose piece 26, in which the collar 30 is extended by 1 and 2 mm, so that these neck nuts 16 suitable for mounting of grinding wheels 18 with a thickness of 7 and 6 mm are.
  • the length of the collar 30 is in each case dimensioned such that the grinding wheel 18 is flush with the neck nut 16 and protrudes between the two projections 28 of about 1 mm.
  • the second embodiment of the invention which is shown in Figures 6 to 10.
  • the unit of the neck nut 16 and the tube piece 26 is already pressed in the production.
  • the tube piece 26 in this case has no projection.
  • the hose piece 26 has a diameter about 1 mm larger than the hub bore 19 of the grinding wheel 18, so that in the end there is also a compression or compression connection between the neck nut 16 and the grinding wheel 18.
  • the tube piece 26 in turn has a collar 30 and the key size of the hexagonal head 22 is dimensioned so that it covers the edge of the hub bore 19 by at least about 1 mm at each point.
  • the length of the tube piece 26 without the collar 30 is slightly, about 0.5 mm, greater than the thickness of the grinding wheel 18, so that also here the grinding wheel 18 is not axially between the bottom of the hexagonal head 22 and the clamping flange 14th is clamped, but is determined by radial forces through the pressed and compressed tube piece 26 on the neck nut 16.
  • Figures 8 to 10 show neck nuts 16 with hose pieces 26 for different sized grinding wheels of 8, 7 and 6 mm thickness.
  • the length of the tube piece 26 without the collar 30 is 8.5, 7.5 or 6.5 mm and is thus 0.5 mm larger than the thickness of the grinding wheel 18.
  • the collar 30 has a length of 1 mm and the thickness of the hexagonal head 22 is correspondingly increased, so that the neck nut 16 each has the same length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

L'invention concerne un dispositif permettant de séparer et de polir, qui présente une unité d'entraînement, un arbre de travail (12) et un flasque de serrage (14), ainsi qu'un écrou (16) pour fixer par serrage un outil (18) par son alésage de moyeu sur l'arbre de travail (12). Des moyens (26) en matériau élastique, qui amortissent les vibrations sont prévus entre l'outil (12) et l'écrou (16). L'écrou est un écrou à collet (16). Les moyens amortisseurs de vibrations se présentent sous forme de paraison (26) entre la face intérieure de l'alésage de moyeu (19) de l'outil (12) et la face extérieure de la zone de collet (20) de l'écrou à collet (16). La paraison (26) présente une projection axiale (28) avant assemblage ou est comprimée ou refoulée à l'état assemblé.
PCT/EP2006/065898 2005-09-01 2006-09-01 Dispositif pour separer et polir, dispositif de serrage et outil a amortissement de vibrations WO2007026007A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06793132A EP1940590A1 (fr) 2005-09-01 2006-09-01 Dispositif pour separer et polir, dispositif de serrage et outil a amortissement de vibrations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005013880.0 2005-09-01
DE200520013880 DE202005013880U1 (de) 2005-09-01 2005-09-01 Vorrichtung zum Trennen und Schleifen, Spannvorrichtung und Werkzeug mit Vibrationsdämpfung

Publications (1)

Publication Number Publication Date
WO2007026007A1 true WO2007026007A1 (fr) 2007-03-08

Family

ID=37396031

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/065898 WO2007026007A1 (fr) 2005-09-01 2006-09-01 Dispositif pour separer et polir, dispositif de serrage et outil a amortissement de vibrations

Country Status (3)

Country Link
EP (1) EP1940590A1 (fr)
DE (1) DE202005013880U1 (fr)
WO (1) WO2007026007A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357702B2 (en) 2005-12-07 2008-04-15 Giovannii Ficai Grinding wheel
WO2015183105A1 (fr) * 2014-05-26 2015-12-03 Talus Industries Nz Limited Dispositif destiné à être utilisé avec un outil électrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007047131B4 (de) * 2007-10-02 2018-09-06 Gerd Eisenblätter Gmbh Rotationssymmetrische Schleif- oder Polierscheibe sowie Gewindeeinsatz hierfür

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040485A (en) * 1959-07-16 1962-06-26 Tocci-Guilbert Berne Resilient coupling
DE1924882A1 (de) * 1968-05-24 1970-01-15 Karl Heinkel Appbau Kg Elastische Kupplung fuer angetriebene Rotationskoerper,insbesondere Geblaeseraeder
US3566547A (en) 1967-11-28 1971-03-02 Gray Tech Ind Inc Grinding wheel spindle assembly
DE7628082U1 (de) 1975-09-11 1977-01-27 Edenvale Engineering Works (Proprietary) Ltd., Johannesburg, Transvaal (Suedafrika) Schleifscheiben-befestigung
DE2632652A1 (de) 1975-07-23 1977-02-10 Slipmaterial Naxos Vaestervik Geraeuschgedaempfte schleifscheibe
JPH07118376A (ja) 1993-10-19 1995-05-09 Chisso Corp ポリエステル電気絶縁物
WO2000027590A1 (fr) 1998-11-10 2000-05-18 Tyrolit Schleifmittelwerke Swarovski Kg Dispositif de serrage pour disques abrasifs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1741924U (de) * 1956-12-07 1957-03-21 Gruber & Beyer G M B H Befestigungsvorrichtung einer topfscheibe.
DE1977726U (de) * 1967-08-11 1968-01-25 Carl Meyer Steinbearbeitungs M Elastischer aufnahmeteller fuer schleifkoerper.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040485A (en) * 1959-07-16 1962-06-26 Tocci-Guilbert Berne Resilient coupling
US3566547A (en) 1967-11-28 1971-03-02 Gray Tech Ind Inc Grinding wheel spindle assembly
DE1924882A1 (de) * 1968-05-24 1970-01-15 Karl Heinkel Appbau Kg Elastische Kupplung fuer angetriebene Rotationskoerper,insbesondere Geblaeseraeder
DE2632652A1 (de) 1975-07-23 1977-02-10 Slipmaterial Naxos Vaestervik Geraeuschgedaempfte schleifscheibe
DE7628082U1 (de) 1975-09-11 1977-01-27 Edenvale Engineering Works (Proprietary) Ltd., Johannesburg, Transvaal (Suedafrika) Schleifscheiben-befestigung
JPH07118376A (ja) 1993-10-19 1995-05-09 Chisso Corp ポリエステル電気絶縁物
WO2000027590A1 (fr) 1998-11-10 2000-05-18 Tyrolit Schleifmittelwerke Swarovski Kg Dispositif de serrage pour disques abrasifs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357702B2 (en) 2005-12-07 2008-04-15 Giovannii Ficai Grinding wheel
WO2015183105A1 (fr) * 2014-05-26 2015-12-03 Talus Industries Nz Limited Dispositif destiné à être utilisé avec un outil électrique

Also Published As

Publication number Publication date
DE202005013880U1 (de) 2007-01-11
EP1940590A1 (fr) 2008-07-09

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